Combined lamp base and ball holder



FIG. 1 is a right front perspective view of the design for a combined lamp base and ball holder;

FIG. 2 is a top plan view of the lamp base;

FIG. 3 is a bottom view of the lamp base;

FIG. 4 is a rear elevated view of the lamp base.

The lamp, shade, ball and electric cord are shown in broken lines for illustrative purposes only. 

The ornamental design for a combined lamp base and ball holder, as shown and described. 